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采用γ射线辐照可溶性Co盐溶液可制备金属Co超细微粒及其相应粉体.X射线衍射、电子衍射及相应的TEM形貌分析表明，金属粒子呈现各向异性生长的结晶体，当用醋酸Co作为出发原料，被辐照溶液浓度在0.005－0.2mol／L的范围内，辐照剂量和pH分别在2.3×104-3.9×105Gy和6.0-10.0时，超细粒子的平均粒径一般都在30nm左右.
The metallic Co ultrafine particles and their corresponding powders were prepared by γ-ray irradiation of soluble Co salt solution.X-ray diffraction, electron diffraction and the corresponding TEM morphology analysis showed that the metal particles showed anisotropic growth crystal when acetic acid Co as a starting material, the concentration of the irradiated solution in the range of 0.005-0.2mol / L, the radiation dose and pH of 2.3 × 104-3.9 × 105Gy and 6.0-10.0, the average particle size of ultrafine particles are generally Around 30nm.